Vibrator for induction-coils.



B. L. LAWTON.

VIBRATOR POE INDGTON GOILS.

APPLIUATION FILED 11011.25, 19013.

958,509. Patented May 17,1910,

l 5l W A CORPORATION OF CONNECTlf/U'i clerics.

MEELIEN, CONNECTICUT,

Application filed November 25, 190.

Specification ci 'Letters Patent.

raeeiired'iiiaym, i910.

To all whom'it may concern:

Be it known that l, BUirroN li. liiivwroia, a citizen of the United' States, residing :.t Meriden, county of New Haven, State of Connecticut, have invented certain new and useful linproveinonts in Vibrators for Ynduction-Coils, of which the following is :i full, clear, and exact description.

My invention relates to .improvements in vibrators for induction coils.

The chief object of the invention is to improve the vibrator adjusting means.

1n thc drawings, Figure 'l is a side eled vation of the upper end of an induction coil having mounted thereon a vibrator. is a front view of the saine parts. lT illustrates a plan and front elevation of a detail of construction detached. e. is a side elevation of another detail.

1 may represent the casing of an induction coil.

2 represents the core of the coil project-- ing through the upper end and sliglitlf' exposed.

l 3 is the vibrator proper, which may bc of the usual Flexible type carried :it its 'ear by a suitable mounting or support Ll', the forward end of the vibrator overstant'l ing and co-acting with the core 2 and. haw ing the usual facing block.

5 is a bridge havin the usual f et or bases 5a by which said ridge is firmly supported upon and connected to the top of the coil casing.

5b are the usual connecting screws.

6 is an adjusting device, in this instance, in the form ofy a thumb screw carried by the bridge 5 above the vibrator il. "flic vibrator f3 carries at its up )er side the con-- tact point 7, which is n'iate ordinair-'ly o platinum or other specially suitable nr ia and which is rigidly secured to the vibrator in the usual manner.

Hcretofore, it has been the practice to proA vvide a contact at the foot of the screw G and -rigidly connected thereto so as to rotate therewith, said screw co-actingwith the vibrator contact point similar to 7. lit has been found, however, that after continued use, these points bccoine pitted l so as to produce more or less unevenness upon the adjacent surfaces of the contact point mein bers. Strangely enough where L pitting "l of this sort occurs, the contact surfaces l l l to adjust vtheniselves so that where a depression in one contact occurs, a substantially wirres;)ending projection is formed upon the other contact. Now, assuming that these irregularities occurred at a point eccentric to the s of :rotation of the adjusting screw, under suchWconditions the slightest rotary lnovcnwnt of the screw and point would very seriously disturb the relative position of the contact surfaces of the companion points. rThis will ho readily seen, because the projection on one of the. contacts, formerly i rang-cd opposite to a corresponding .deii'ession in the ottici' contact, would be inovcd around to a higher point so as to present dissimilar surfaces which quickly weer down.

this of iny objects is therefore to prevent this result and to make it possible to secure very simply and expeditiously the nicest sort of adjustment. 'ilo accomplish this, I prevent ny independent rotation of the contact points themselves during adjustment and `provide iii'ins 'for moving said contacts nearer to or from euch other, always causin tiiein to face up according to 1 fis a result any pit iiil setting.

one cont-.ict point will always stand opppsie to a corresponding projection on the other. Unc very simple and eliici'uit in .s for accomplishing this end is i nei-cin. and this l. will now proccce 'to newziihc.

ES, l i id contact point arranged to co- -t i ith tno vibrator contact pointV Y. -This con act point in the particular forni shown herein rigidly connected to the arch of a yielding bridge t), which stands over the vibrator B. -is sl seen in Fig, 2. ln this n the contact support, the

piriicular 1 l u l b il i laterally extending feet 9 n. e Linged under the feet 5 of the 4S as 'to be clamped securely 1n e thereby.

ciu.; -on oi ine wielding contactcariyiiigbildge 7 so Ythat by moving the screw up and down by rotation in the proper direction, the arch of said bridge S) carrying the contact 8 will be. a,orrespondingly moved, the Spring action I'l`hc screw 6 operates on the :oie fre @En CONNECTICUT when they are once properly positioned opposite one another, never turn independently so as to disturb the Corresponding contactaces, excepting as one may be adjusted to and fro relatively to the other. in the preferred .forni ofthe particular embodiment disclosed herein, the sides of the contact carrying bridge 9 which project upwardly from the feet 9 converge somewhat so as to atl'ord the proper clearance between the sides of the bridge 5, permitting the arch of the bridge to spring properly and at the same time pern'iittingsuiiicient lateral move- Inent to guarantee the proper alineinent at all times of the contact 8 relatively to contact 7. This alinement of said contact points is effected very simply by means ot' a tapered nose 8a on the upper side et the contact S. The lower end ot' the screw t5 is provided with a tapered recess as at 6 (Fig. a) serving to receive the nose or projection 8a. W'hen the parts are assembled, the nose 8 will center in the recess 6, and will be held thereby against any lateral displacement. The original design of these parts being such that when this nose stands in this recess, tlie contact points 7 and 8 will'be in accurate alinement. Obviously, the design of this centering means may be modilied in a variety of ways so long as it accomplishes the intended' purposel By having a portion of the contact point 8 project above and below the bridge t), it will be seen that the upper part 8 may be employed to form a rivet head, whereby said Contact S will be held with the. utmost security, a feature of great desirability in structures of this character. Obviously, the

lower contact i may be securely riveted to the spring blade ot the vibrator 3. By this construction many advantages are gained, some of which have been pointed out, and all of which will be readily ap parent to tl'ien'icchaiiic skilled in this art.

While l have shown herein a simple and preferred torni oi my invention, l am fully aware that. man v modiiications may be resorted to, and lV intend herein to cover any modification ol the apparatus, which operates to attain the chief object of this invention, which to maintain the contact faces of the contact points against independent rotation or displacement, so that not only is superior adjustment easily and quickly etlccted, but, also so that after adjustment the contact 'faces of the companion Contact points will i'aec up in such a manner as to resist to the utmost wear occasioned by the hammering action ot" one on the other incidental to thc operation of' the vibrator element,

l. ln a vibrator ttor induction coils, a vibrator element having a iixed contact point, a bridge having a ilexible arch, said bridge being mounted at opposite sides of said Vibrator element but independent thereof and overstanding the same, a contact point lixedly carried by the arch o'tf said bridge and overstanding the contact point on the vibrator and an adjusting mechanism above the ari-li ol said bridge l'or adjusting the coi'itact point carried thereby toward and :trom the vibrator contact point.

Q. ln a vibrator tor induction coils, a vij brator element having a tixed contact point,

a bridge having a tlexible arch, said bridge being mounted at opposite sides of said vibrator element but iinlependent thereof and overstanding the same, a contact point ixculy carried by the arch oil said bridge and over-standing the contact point on the vi brator and an adjusting screw above the arch ot said bridge tor adjusting the contact point carried thereby toward and from the vibrator contact point.

l. ln a vibrator tor induction coils, a vibrator element having a tixed contact point, a bridge having a tlexible arch, said bridge being mounted at opposite sides oi. said vibrator element but independent thereof and over-standing the same, a contact point tixedly carried by the arch of said bridge and iweistamling the contact point on the vibrator and an adjusting screw above the arch ot said bridge loiadjusting the contact point carried thereby toward and from the vibrator contact point, the said adjusting screw being provided with means for centering or alining the upper contact point relatively to the lower contact point.

BURTON L. LWTON.

lVitiiesses:

lt. l. itfli'rcinnm, M. E. (lixnnn'rr. 

